Ruler.



- U ITED I STATES Patented March 8, 1904s PATENT OFFICE.

JOHN JACOBS, OF CHICAGO, ILLINOIS.

RULER. I

SPECIFICATION forming part of Letters Patent No. 753,886, dated IiIarch8, 1904. Application filed October 24, 1903. Serial No. 178,357. (Nomodel.)

- T aZZ whom it may concern;

' Be it known that 1, JOHN H. J AOOBS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Rulers, of which the followingis a specification.

' My invention" relates to rulers; and its pri mary object is to providea blotting means adapted to be easily and readily attached to.

and detached from a ruler of any construction, whereby a ruler maybeused without liability of the'surface which is being ruled becomingsoiled by inkrunning from the guiding edge of the ruler to the surface.

A further object of the invention is to provide novel devices adapted toremovably secure the blotting means in applied position and to affordmeans by which the ruler may.

be handled. x H

With the 'above and other objects in view the invention consists in theconstruction,

combination, and arrangement of parts hereinafter fully described,claimed, and illustrated in the accompanying drawings, which disclosethe preferred embodiment of my invention, and in which- Figure 1 is aperspective view of a ruler equipped with a blotting. means constructedin accordance with my invention; and Fig. 2 is a side elevation thereof,the ruler and blotting means being broken away, at the points where thesecuring devices are located.

Referring to the drawings by reference-numerals, 1 designates an 0rdinarily-constructed ruler, 2 the blotting means, and 3 the devices fordetachably securing the blotting means in applied position.

The ruler is provided with openings 4:, ex tending from the upper to theunder surface thereof and preferably three in number, two being disposednear either end of the ruler and the third in the center thereof. Theopenings have their upper portion restricted to provide shoulders 5, thepurpose of which will be hereinafter fully pointed out. The

' the surface being ruled, and one of its edges is in vertical andlongitudinal alinement with the guiding edge of the ruler to receive anyink which might otherwise flow from the guiding edge to the surfacebeing ruled and also permits the rulerto be used on surfaces having wetlines. The blotting means is provided with openings 6, adapted to alinewith the openings 4:, and their lower portions are enlarged to providerecesses 7. The fastening devices comprise internallyscrew-threadedsleeves 8, provided with horizontally-disposed heads 9 and threadedbolts 10, adapted to be received by the sleeves and provided withknurled head 11, by means of which they are turned to be connected to ordisconnected from the sleeves. One of the heads 11 preferably the centerone, is increased in size to provide a handle'by means of which theruler may be conveniently handled, while the remaining heads aresufficiently small to prevent them from forming obstructions, but not toprevent them from being easily are adapted to occupy the openings 6 andproject thereabove to fit in the enlarged portions of the slots 4 andabut against the shoulders 5. The heads of the sleeves are adapted tooccupy the recesses 7, to be embedded in the blotting means sufiicientlyto prevent them from coming into contact with the surface being ruled.The bolts 10 are adapted to project through the restricted portions ofthe slots 4.- and be turned into the sleeves 8 to secure the blottingmeans in applied position. The engagement of the shoulders 5 by theupper portions of the sleeves prevents the heads 9 from being drawnupward farther than is necessary to firmly connect the blottingmeans tothe ruler, thereby obviating all liabilityof the fastening devicescausing the surface of the blotting means to bulge at the points whereit is connected to the ruler.

It is apparent from the above-described construction, taken inconnection with the accompanying drawings, that I provide a blottingmeans which may be readily and easily attached to any construction ofruler to absorb all ink that would otherwise flow from the guiding edgeto the surface being ruled and that the blotting means may be readilyremoved when soiled to be replaced by a new blotting means. It isfurther apparent that the manner of securing the blotting means inapplied position obviates all liability of the surface of the blottingmeans becoming uneven, consequently avoiding any rocking motion of theruler when in contact with a surface, which would otherwise occur, andthat the provision of one of the fastening means with a handle enablesthe operator to conveniently manipulate the ruler.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, iso 1. A device of thecharacterdescribed, comprising a ruler, a blotter, means carried by theblotter, and means carried by the ruler and adapted to detachably engagethe first-mentioned means to removably secure the blotter in appliedposition. 7

2. A device of the character described, comprisinga ruler, a blottingmeans, sleeves carried by the blotting means, and means carried by theruler and adapted to engage the sleeves to secure the blotting means inapplied position.

3. A device of the character described, comprising a ruler, a blottingmeans, sleeves carried by the blotting means, and bolts carried by theruler and adapted to engage the sleeves by the ruler and adapted toengage the sleeves to secure the blotting means in applied position, oneof said bolts being provided with a handle.

5. A device of the character described, comprising a ruler provided withshouldered recesses, a blotting means, means carried by the blottingmeans and adapted to engage the shoulders of the recesses, and meanscarried by the ruler and adapted to engage the second-mentioned means tosecure the blotting means in applied position.

6. A device of the character described, comprising a ruler provided withopenings reduced to provide shoulders, a blotting means provided withopenings and recesses communicating therewith, sleeves adapted to occupythe last-mentioned openings and engage said shoulders, said sleevesbeing provided with heads adapted to occupy the recesses, and boltsprovided with knurled heads and occupying the firstmentioned recessesand adapted to engage the sleeves to secure the blotting means inapplied position.

In testimony whereof I afiix my signature in presence of two witnesses.

' JOHN H. JACOBS.

Witnesses:

WILLIAM MADLUNG, FREDERICK M. FETT.

